Paper feeding and retaining arrangement for typewriters



J. J. COOPER Aug. 16, 1932.

PAPER FEEDING AND RETAINING ARRANGEMENT FOR TYPEWRITERS 5 Sheets-Sheet 1 Afr Filed April 4, 1928 Aug. 16, 1932. J. J. COOPER 1,871,445

PAPER FEEDING AND RETAINING ARRANGEMENT FOR TYPEWRITERS Filed April 4, 1928 a Sheets-Sheet 2 M o 0 VJ s W32 .J. J. COOPER 3 9 PAPER FEEDING AND RETAINING ARRANGEMENT FOR TYPEWRITERS Filed April 4, 1928 3 Sheets-Sheet 5 W e/War; WMW W I] Patented Aug. 16, 1932 UNITED sr Es PATENT err -CE? :ronN JOSEPH" coornn, or LoNnoN, ENGLAND, ,AssIeNoR To untonnwoon ELLIOTT FISHER COMPANY, or NEW roux, N. Y., A CORPORATION or DELAWARE PAPER FEEDING AND RETAINING ARRANGEMENT FOB TYPEWRITERS Application filed April 4, 1928, Serial No. 267,170, and in Great Britain July 15, 1927.

This invention relates to the simultaneous production of multiple copies of matter on a typewriter and has for its ob ect to provide means for enabling one or more sheets of paper'or the like to be inserted into and removed from a typewriter without disturbing the posit-ion of other sheets, and is particularly applicable to' typewriters. employed for the simultaneous production of mvolces and day-book sheets.

According to the present llIlVGIltlOIl the sheets so to be removed or inserted are narrower than the remaining sheets and means are provided for gripping the lateral margins of said remainingsheets approximatelyconcurrently with the release of the usual feed rollers and vice-versa.

Preferably one or more of the feed rollers of a set or a part attached thereto is or are adapted to engage with one end of a double ended lever the other end of which is furnished with a gripping finger which, when said double ended lever is tilted by the rocking movement of the feed roller, is con strained towards the platen so as to grip the adjacent margin of the remaining sheet or sheets positioned on said platen.

One form of the invention will be described with reference to the accompanying drawings of which Figure 1 is a planof a type- Writer carriage wherein portions are omitted or are broken away for the sake of clearness; Figure 2 is a fragmentary plan to an enlarged scale, similar to Figure ,1 but with the paper guide removed and indicated by broken lines;

Figure 3 is a part sectional end elevation,

the section being taken on the line 33 of Figure 2 showing the feed rollers in operative position; Figure 4 is a view similar to Figure 3 but with the feed rollers released and Figure 5 is a fragmentary sectional end elevation taken on the line 5-5 of Figure 2. Figure 6 is a sectional elevation, showing the rollers and gripper set to ineffective intermediate positions.

As shown in the drawings the platen or cylinder at of a typewriter is rotatably mounted in the ends 6 b of a carriage 0 which latter has fixed thereto a sloping paper rest cl and carries a paper guide 6.

The paper guide 6' is curved to conform with the surface of the platen a beneath which it extends, and is formed on its rear edge with tongues f f which engage with slots 9 g in the paper rest d so that the upper surfaces of the rest (Z and guide forma substantially continuous and unobstructed path for a sheet or sheets of paper or the like such as h.

The usual sets of front and rear feed rollers j la are adapted to be moved into and out of operative position by respectively raising and depressing the paper release lever m through the medium of a link a, lever 0, cam 10 and rocking lever 9 all of which are of known construction with the exception ofthe rocking lever g which issituated near the right hand end of the platen a and for the purposes of this invention is extended upwardly as at r so as to be adapted, when the paper release lever m is depressed, to extend through a slot 8 in the guide 6 and press against the platen or against the paper h.

Near the left hand end of the platen a there is pivotedupon the usual feed roller support ing shaft or bar t, a double ended lever 10,41, (see Figure 5), one end u of which extends beneath the rear feed" roller spindle w whilst the other end 4; is upturned 'so that its tip, when the lever u '0 is tilted by the downward or release movement of the feed roller spindle w, is constrained towardsthe platen a or the paper it, the paper guide 6 being cut away as at m to give passageto said end 4;. The

spindle 'w is carried by the usual rock-arms, extending from'the shaft t.

In use, a large sheet or sheets of paper or the like it is or are inserted into the machine in the usual manner together with one or more narrower sheets the widths of which are, lessthan the distance between the two gripping fingers 1 and 'v, the paper release leverm being in its raised position. 1

When it is desired to'remove the smaller 7 sheets without disturbing the remainder, the paper release lever m is depressed whereupon the feed rollers 7' is move on' their usual arms away from the platen whilst the gripping fingers 'rand o are constrained to press against and grip the margins of the larger sheets. Thus, whilst the smaller sheets are pedit-ion.

released so as to be capable of removal and substitution, the large sheetsare retained in position For convenience in adjusting the positions of the whole of the sheets of paper or the like, both large and small it is convenient so to arrange the amplitude and relationship of the movements of the gripping fingers r and 'l) and of the feed rollers and is, that in the mid-positions of the respective movements of said fingers and rollers the whole of the sheets of paper or the like, will be released orvripped so lightly as to be capableof adjustment and it is convenient also to provide means for moving the paper release lever into an intermediate positionand maintaining it therein sothatwhilst the :IG'Gd rollers are substantially released, the grippingfingers are not yet in effective operation. For this purpose an auxiliary lever y may be mounted on that end of the carriage 0 adjacent to the paper release lever m, and be furnished with a transverse pin 2 adapted when the auxiliary l-everyis rocked against the action of a light spring 11 to engage with a cam 12 formed on the adjacent edge of the paper re-v lease lever m. The positions, dimensions and shape of the auxiliary lever i pin a and cam 12 are so arranged as to enable the paper release lever on readily to be moved into, and retained in, a suitable intermediate position by a simple rocking movement of the lever y.

By use of this invention a simple and inexpensive devi-ce is provided whereby the usual extraneous means for retaining sheets of paper or-the like in position in a type writer during the withdrawal and insertionof other sheets may be dispensed with and the operation be efiected withsaccuracyuand ex-.

The lever u wlth its grippingfinger e is placed at the extreme left-hand end of the platen, Figure 2, and canco -ope'rate with the adjacent U-shaped lever at this end of the platen (see Figure l) to hold .a wide sheet solely by means of the left-hand margin thereof, where said wide sheet fails to reach the right-hand gripper r. This gives a range of positions for the wide sheets at different. stations lengthwise of the platen, so that the a carbon-copies may be made in different zones or portions of the wide sheets, as desired; the

narrow sheets feeding between the two grippersir, while the'wide sheetsmay be held by the two grippers 1', or by the three grippers r and v, or by the left-hand grippers 0, '7' alone.

I claim 7 r 1. In a typewriter having-a cylinder, feed rollers, a shaft, rockingarms pivoted to said shaft, :1 spindle for said feed rollers mounted on said arms, means operatively connected with said arms for rocking said feed rollers towards and away from said cylinder, a double ended lever pivoted to said shaft near one end thereof, one end of said double ended lever lying in the path of said feed roller spindle and the other end having gripping means adapted, when said feed rollers are rocked away from said cylinder, to be constrained towards said cylinder.

2. In a typewriter having a cylinder, feed rollers, a feed roller release lever and means vconcurrently with the release or" said feed rollers, means formoving said feed roller release leverto an intermediate position comprising an auxiliary :lever,,a:transverse pin on said auxiliary lever and a cam on said feed roller release lever adapted to engage and coact with said transverse p n.

3.- In a typewriting machine having a car-- riage and a cylinder with feed-rollers for feeding-different widths of sheets around the cylinder, the combination of a lever for re-v leasing said feed-rollers from a sheet-feeding position, sheet-clamping means controlled by said lever-and operable to clamp the margin of the wider sheet to the cylinder, while one or more of the narrower sheets are inserted and removed from the cylinder, said clamping meansarranged on the carriage near the end of the cylinder and adjacent to the feed rollers, whereby the movement of said lever to release said" rollers from their sheet-feeding position will move the clamp into a shee clamping position against the cylinder, and a finger-piece'mounted on the carriage, having means to partially vibratersaid lever to release the feed-rollers and not move the clamping means into a sheet-clamping position. i

4. In a typewriting machine having a cylinder and feed-rollers, the combination with afeed-rollerrelease key, of a gripper effective to grip the margin of a sheet on said cylinder by the casting 0fi:' of said feed-rollers by said key, an independently-operable finger-piece, andmeanson said key and operable by said finger-piece for moving and maintaining said feed-rollers away from the platen,and moving said gripper towards the platen without. gripping the sheet.

JOHN JosEPH ooornn- 

